UGG Australia Womens Kioni Boot Leather Shaft measures approximately 6.25" from arch Insole: Plush Poron foam cushioned; leather lined footbed with 7mm curly UGGpure forefoot with woven label logo. Wingtip leather and suede lace up boot with brogue detailing Pull tab at rear 6 1/4" shaft height 2mm round waxy cotton laces